Affiliation: | 1. Department of Surgery, Sk?ne University Hospital, Lund University, Lund, Sweden;2. Institution of Clinical Sciences, Lund University, Lund, Sweden;3. Department of Surgery, Hallands Hospital, Halmstad, Sweden;4. Department of Surgery, Blekinge Hospital, Karlskrona, Sweden;5. Department of Surgery, Central Hospital, Kristianstad, Sweden |